[Q] help i have a kind of dead g900f

I have a "small" problem. My friend just gave me this g 900m galaxy s5 he can't get to boot up. He tried to root it and it went wrong. So I gave it a try. I got philpz touch recovery installed and tried to flash a stock rooted Rom on it. And then it booted to boot animation. And stuck at the animation. I tried to flash to stock rom with Odin. No luck there. So I tried to flash with pit still no luck. I got a system. Some error in Odin when I tried using that. I hope you guys have some ideas the can help us out. :/

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